12611456403 has 64 divisors (see below), whose sum is σ = 21555072000. Its totient is φ = 6379107840.

The previous prime is 12611456399. The next prime is 12611456471. The reversal of 12611456403 is 30465411621.

It is not a de Polignac number, because 12611456403 - 2² = 12611456399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12611456003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1174288 + ... + 1184978.

It is an arithmetic number, because the mean of its divisors is an integer number (336798000).

Almost surely, 2^12611456403 is an apocalyptic number.

12611456403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12611456403 is a deficient number, since it is larger than the sum of its proper divisors (8943615597).

12611456403 is a wasteful number, since it uses less digits than its factorization.

12611456403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10892.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 12611456403 in words is "twelve billion, six hundred eleven million, four hundred fifty-six thousand, four hundred three".